This one's easy and quick to make. Put the rum, cinnamon stick and lemon slice in a mug or your cup of choice. Fill it up the rest of the way with boiling water, float the butter on top, then stir. Mmm ...

This one's easy and quick to make. Put the rum, cinnamon stick and lemon slice in a mug or your cup of choice. Fill it up the rest of the way with boiling water, float the butter on top, then stir. Mmm ...